Zinc alloy



UNITED STATES PATENT OFFICE.

ARRIGO TEDESCO, 0F 'IURIN, ITALY, ASSIGNOR TO SOCIE'IA ANONIMA STABILIMENTI 'BIAK, 0F TURIN, ITALY, A COMPAHY 0F ITALY.

Patented Jan. 4, 1921.

ZINC ALLOY.

1,364,654. I Specification of Letters Patent.

No Drawing.

To all whom it may concern:

Be it known that I, ARRIGO TEDESCO, subject of the King of Italy, and resident of Turin, Italy, have invented certain new and useful Improvements in Zinc Alloys, of which the following is a specification.

This invention has for its object a z nc alloy having a fine Y grained structure and being adapted both to be machined by means of lathe, milling machine and generally by machine tools and to be worked by hot and cold forging and stamping, shearing, punching, holing and other metallurglcal methods.

The alloy according to this invention 1s chiefly formed of zinc which is the prevailing constituent thereof, with add tlon of iron, copper and manganese and one or more of following metals: cadmium, zirconlum, nickel and aluminium.

The proportions of the various constituents may vary according to particular characters required from the alloy, the amount of said metals being comprised within the ranges stated by following table:

Zinc from 85 to 96 percent. Cadmium 0,3 0,7 Nickel 0,5 8,0 Iron 0,5 1,9 Aluminium--- 2,5 7,1 Zirconium 1,2 2,5 Manganese 0,3 0,9 Copper 2,0 8,0

Application filed April 11, 1919. Serial No. 289,388.

One or more among cadmium, zirconium, nickel and aluminlum may be omitted in the alloy but at least one of them must be con- 'tained.

cal actions and with a fine grained structure causing it to be adapted to any kind of machining and working methods.

lVhat I claim as my invention and desire to secure by United States Letters Patent is:

A zinc alloy, comprising zinc in proportion exceeding 85%, copper in proportion between 2 and 8%, aluminum in proportion between 2.5 and 7 1%, and nickel in proportion between 0.5 and 8%, together with a smalladdition of iron and manganese.

Signed at Turin, Italy, this 13th day of March, A. D. 1919.

ARRIGO TEDESCO. 

